20656496

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{571}}^1$

素因数の和:622

約数の個数: 80

約数和(自身を含む): 51068160

約数和(自身を除く): 30411664

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 19, 28, 34, 38, 56, 68, 76, 112, 119, 133, 136, 152, 238, 266, 272, 304, 323, 476, 532, 571, 646, 952, 1064, 1142, 1292, 1904, 2128, 2261, 2284, 2584, 3997, 4522, 4568, 5168, 7994, 9044, 9136, 9707, 10849, 15988, 18088, 19414, 21698, 31976, 36176, 38828, 43396, 63952, 67949, 75943, 77656, 86792, 135898, 151886, 155312, 173584, 184433, 271796, 303772, 368866, 543592, 607544, 737732, 1087184, 1215088, 1291031, 1475464, 2582062, 2950928, 5164124, 10328248, 20656496]

約数ペア:

[(1, 20656496), (2, 10328248), (4, 5164124), (7, 2950928), (8, 2582062), (14, 1475464), (16, 1291031), (17, 1215088), (19, 1087184), (28, 737732), (34, 607544), (38, 543592), (56, 368866), (68, 303772), (76, 271796), (112, 184433), (119, 173584), (133, 155312), (136, 151886), (152, 135898), (238, 86792), (266, 77656), (272, 75943), (304, 67949), (323, 63952), (476, 43396), (532, 38828), (571, 36176), (646, 31976), (952, 21698), (1064, 19414), (1142, 18088), (1292, 15988), (1904, 10849), (2128, 9707), (2261, 9136), (2284, 9044), (2584, 7994), (3997, 5168), (4522, 4568)]